Porous protective solid phase micro-extractor sheath
Abstract
A porous protective sheath for active extraction media used in solid phase microextraction (SPME). The sheath permits exposure of the media to the environment without the necessity of extending a fragile coated fiber from a protective tube or needle. Subsequently, the sheath can pierce and seal with GC-MS septums, allowing direct injection of samples into inlet ports of analytical equipment. Use of the porous protective sheath, within which the active extraction media is contained, mitigates the problems of: 1) fiber breakage while the fiber is extended during sampling, 2) active media coating loss caused by physical contact of the bare fiber with the sampling environment; and 3) coating slough-off during fiber extension and retraction operations caused by rubbing action between the fiber and protective needle or tube.
- Inventors:
- Issue Date:
- Research Org.:
- Univ. of California, Oakland, CA (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1175291
- Patent Number(s):
- 6871556
- Application Number:
- 09/917,475
- Assignee:
- The Regents of the University of California (Oakland, CA)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01L - CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION
Citation Formats
Andresen, Brian D., and Randich, Erik. Porous protective solid phase micro-extractor sheath. United States: N. p., 2005.
Web.
Andresen, Brian D., & Randich, Erik. Porous protective solid phase micro-extractor sheath. United States.
Andresen, Brian D., and Randich, Erik. Tue .
"Porous protective solid phase micro-extractor sheath". United States. https://www.osti.gov/servlets/purl/1175291.
@article{osti_1175291,
title = {Porous protective solid phase micro-extractor sheath},
author = {Andresen, Brian D. and Randich, Erik},
abstractNote = {A porous protective sheath for active extraction media used in solid phase microextraction (SPME). The sheath permits exposure of the media to the environment without the necessity of extending a fragile coated fiber from a protective tube or needle. Subsequently, the sheath can pierce and seal with GC-MS septums, allowing direct injection of samples into inlet ports of analytical equipment. Use of the porous protective sheath, within which the active extraction media is contained, mitigates the problems of: 1) fiber breakage while the fiber is extended during sampling, 2) active media coating loss caused by physical contact of the bare fiber with the sampling environment; and 3) coating slough-off during fiber extension and retraction operations caused by rubbing action between the fiber and protective needle or tube.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Mar 29 00:00:00 EST 2005},
month = {Tue Mar 29 00:00:00 EST 2005}
}
Works referenced in this record:
Direct solid phase microextraction of complex aqueous samples with hollow fibre membrane protection
journal, January 1996
- Zhang, Zhouyao; Poerschmann, Juergen; Pawliszyn, Janusz
- Analytical Communications, Vol. 33, Issue 7